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clearfix"><div id="pdfctv3" class="twoCol"><div id="owik8ub" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機械及行業(yè)設(shè)備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_famenti/">閥門</a>?<a href="http://www.cdcfah.com/cp/third-famenti_qitafamenbd/">其他閥門</a>?崇信止回閥行價甘肅誠禹惠物資供應(yīng)</p><div id="dipr3yf" class="leftbox clearfix"><h1>崇信止回閥行價甘肅誠禹惠物資供應(yīng)</h1><div id="e7a7tk4" class="proBig"><div id="2yh8c7o" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024352636718/6696423.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mvx7ovp" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024352636718/6696423.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="azgxz2z" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>甘肅省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>崇信止回閥行價,止回閥</p><p><span>***更新：</span>2020-11-01 07:19:26</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="3qxzbvj" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">甘肅誠禹惠物資有限公司</a></p><p><span>聯(lián)系人：</span>楊和平</p><p><span>郵箱: </span>349134533@qq.com</p><p><span>電話: </span>18294448288</p><p><span>傳真: </span>0931_</p><p><span>網(wǎng)址: </span>http://www.gscyhwz.com</p><p><span>手機: </span>0931-7840458</p><p><span>地址: </span>北濱河西路1226之27號(立達建材城A區(qū)11棟104室)</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="a774pry" class="page-proshow02"><p class="title">詳細說明</p><div id="2kw8hov" class="box"><p><p> <span style="font-size:16px;">止回閥尺寸過小會導(dǎo)致通過該閥的流量過高，從而導(dǎo)致系統(tǒng)中不必要的高壓力損失。它還可能在流中產(chǎn)生過度的湍流，這可能導(dǎo)致閥不穩(wěn)定并增加機械磨損，從而導(dǎo)致更高的維護成本。同樣，通過尺寸過小的閥門的較高流速可能會增加閥門內(nèi)部的腐蝕磨損。閥門的流量系數(shù)Cv用于計算壓力損失。對于水，Cv是壓差為1psi（lb/平方英寸）時的流量，單位為gpm（gal/min）。對于SI單位，Kv是相似的流量系數(shù)：對于水，壓差為1bar時，立方米/小時對于給定的流量，較高的Cv意味著較低的壓力損失。在其他類型的閥門中，崇信止回閥行價，通常需要更高的Cv，崇信止回閥行價。止回閥則不是，這需要不同的方法。對于止回閥，關(guān)鍵因素是要有足夠的流量以使閥在正常系統(tǒng)流量下保持打開狀態(tài)。尺寸合適時，它們需要相應(yīng)的壓降才能有效運行。Bregman說，在單向閥選擇過程中，“您需要知道將閥保持在全開位置所需的小流速或壓力降。”應(yīng)用注意事項由于上游的泵，彎頭或其他流量干擾，即使是尺寸合適的止回閥在處理湍流時也可能會不穩(wěn)定，崇信止回閥行價。優(yōu)良作法是在閥的上游留出一定長度的直管，以使湍流消散（如果有空間的話）。通常，長度為10D就足夠了。</span> 止回閥在連接形式上可分為螺紋連接、法蘭連接、焊接和對夾式連接四種。崇信止回閥行價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="崇信止回閥行價,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024352636718/6696423.png"></div><p> <span style="font-size:16px;">止回閥按結(jié)構(gòu)劃分，可分為升降式止回閥、旋啟式止回閥和蝶式止回閥三種。升降式止回閥可分為立式和臥式兩種。旋啟式止回閥分為單瓣式、雙瓣式和多瓣式三種。蝶式止回閥為直通式、以上幾種止回閥在連接形式上可分為螺紋連接、法蘭連接和焊接三種。止回閥是能自動阻止流體倒流的閥門。止回閥的閥瓣在流體壓力作用下開啟，流體從進口側(cè)流向出口側(cè)。當(dāng)進口側(cè)壓力低于出口側(cè)時，閥瓣在流體壓差、本身重力等因素作用下自動關(guān)閉以防止流體倒流。排水止回閥是當(dāng)市政污水管道中的水面高于地下室地面或用水潔具高度時（通常是由于暴雨等原因造成洪水泛濫），防止市政污水倒灌到地下室的裝置。當(dāng)污水倒流時，閥門會自動關(guān)閉，保護地下室免遭水患。所以要記住哦。</span> 崇信止回閥行價止回閥到底安裝在出口閥前還是閥后？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="崇信止回閥行價,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024300068359/4895710.png"></div><p> <span style="font-size:16px;">止回閥按結(jié)構(gòu)劃分，可分為升降式止回閥、旋啟式止回閥和蝶式止回閥三種。升降式止回閥可分為立式和直通式兩種。旋啟式止回閥分為單瓣式、雙瓣式和多瓣式三種。蝶式止回閥分為蝶式雙瓣、蝶式單瓣。以上幾種止回閥在連接形式上可分為螺紋連接、法蘭連接、焊接和對夾式連接四種。安裝位置安裝止回閥是為了保證水泵內(nèi)部水流的流向，從而保障水泵的正常工作。所以關(guān)于止回閥的安裝位置，到底是安裝在水泵前還是水泵后，可以分兩種情況：1安裝在水泵前豎吸管端頭也叫底閥，目的是為了不用抽一次水向水泵充一次水，因為水泵內(nèi)以及泵前的吸管內(nèi)無水時水泵只能空轉(zhuǎn)抽不上水，所以水泵內(nèi)必須充滿水才能抽出水。這種水泵的安裝是高于液面時的一種方法，也叫負壓法。</span> </p><p> <span style="font-size:16px;">什么是煙道止逆閥？就是用在油煙機煙管和煙道的接頭處的一個閥門。主要是阻止油煙倒灌的作用。公寓樓的煙道都是公用的煙道，有時候，樓上樓下燒飯的時候總會飄來飯菜味，一般情況就是從煙道傳過來的。這個止逆閥可以有一定程度的防止油煙倒灌的作用，但畢竟很難完全密封，所以飯菜味道不能完全阻止隔絕。止回閥的種類很多，根據(jù)其結(jié)構(gòu)特點和用途，一般可分為三大類：1、升降式止回閥。升降式止回閥的閥體多與截止閥閥體相似，它的流體阻力較大。這類止回閥為高壓小口徑，常采用圓球形閥瓣;2、旋啟式止回閥。旋啟式止回閥對流體的阻力較小，一般適用于中小口徑、低壓大口徑管道，常在閥的通道隔板上設(shè)置多個閥瓣，成為多瓣式;3、蝶式止回閥。蝶式止回閥的形狀與蝶閥相似。它結(jié)構(gòu)簡單，對流體的阻力小。</span> 盡可能水平安裝，用于垂直管道上時，應(yīng)保證介質(zhì)流向為自下而上;</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="崇信止回閥行價,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024476875000/9919477.png"></div><p> <span style="font-size:16px;">"止回閥"的選型1為了防止介質(zhì)逆流，在設(shè)備、裝置和管道上都應(yīng)安裝止回閥；2止回閥一般適用于清凈介質(zhì)，不宜用于含有固體顆粒和粘度較大的介質(zhì)；3一般在公稱通經(jīng)50mm的水平管道上都應(yīng)選用立式升降止回閥；4直通式升降止回閥在水平管道和垂直管道上都可安裝；5對于水泵進口管路，宜選用底閥，底閥一般只安裝在泵進口的垂直管道上，并且介質(zhì)自下而上流動；6升降式旋啟式密封性好，流體阻力大，臥式宜裝在水平管道上，立式裝在垂直管道上；7旋啟式止回閥的安裝位置不受限制，它可裝在水平、垂直或傾斜的管線上，如裝在垂直管道上，介質(zhì)流向要由下而上；旋啟式止回閥不宜制成小口徑閥門、可以做成很高的工作壓力，PN可達到42MPa，而且DN也可以做到很大，比較大可以達到2000mm以上。根據(jù)殼體及密封件的材質(zhì)不同可以適用任何工作介質(zhì)和任何工作溫度范圍。介質(zhì)為水、蒸汽、氣體、腐蝕性介質(zhì)、油品、藥品、等。介質(zhì)工作溫度范圍在-196--800℃之間。</span> 受結(jié)構(gòu)限制，不宜用于DN40及以下的管道上;崇信止回閥行價</p><p style="text-indent:25px">由于是對夾式連接結(jié)構(gòu)，不宜用于大口徑(DN600以上)、高壓(Class900及以上)場合;崇信止回閥行價</p><p> <span style="font-size:16px;">止回閥是指啟閉件為圓形閥瓣并靠自身重量及介質(zhì)壓力產(chǎn)生動作來阻斷介質(zhì)倒流的一種閥門。屬自動閥類，又稱逆止閥、單向閥、回流閥或隔離閥。分類及其作用按照閥瓣運動方式分為升降式和旋啟式。升降式止回閥與截止閥結(jié)構(gòu)類似，*缺少帶動閥瓣的閥桿。介質(zhì)從進口端(下側(cè)）流入，從出口端（上側(cè)）流出。當(dāng)進口壓力大于閥瓣重量及其流動阻力之和時，閥門被開啟。反之，介質(zhì)倒流時閥門則關(guān)閉。旋啟式止回閥有一個斜置并能繞軸旋轉(zhuǎn)的閥瓣，工作原理與升降式止回閥相似。止回閥常用作抽水裝置的底閥，可以阻止水的回流。止回閥與截止閥組合使用，可起到安全隔離的作用。缺點是阻力大，關(guān)閉時密封性差。安裝方法旋啟式止回閥：旋啟式止回閥的閥瓣呈圓盤狀，繞閥座通道的轉(zhuǎn)軸作旋轉(zhuǎn)運動，因閥內(nèi)通道成流線型，流動阻力比升降式止回閥小，適用于低流速和流動不常變化的大口徑場合，但不宜用于脈動流，其密封性能不及升降式。旋啟式止回閥分單瓣式、雙瓣式和</span><span style="font-size:16px;">多半式三種，這三種形式主要按閥門口徑來分，目的是為了防止介質(zhì)停止流動或倒流時，減弱水力沖擊。</span> 崇信止回閥行價</p><p style="text-indent:25px">甘肅誠禹惠物資有限公司位于北濱河西路1226之27號(立達建材城A區(qū)11棟104室)，擁有一支專業(yè)的技術(shù)團隊。專業(yè)的團隊大多數(shù)員工都有多年工作經(jīng)驗，熟悉行業(yè)專業(yè)知識技能，致力于發(fā)展誠禹惠球閥,誠禹惠閘閥,誠禹惠閥門的品牌。我公司擁有強大的技術(shù)實力，多年來一直專注于閥門及配件、水泵、水暖器材、五金交電、機械設(shè)備、建筑材料、管道管材管件、電子產(chǎn)品（不含衛(wèi)星地面接收設(shè)施）、塑料制品、辦公用品、勞保用品、金屬制品及材料、消防器材、五金工具、成套設(shè)備、電線電纜、冶金機械、石化機械、家用電器、機械設(shè)備、機電設(shè)備及配件、保溫材料、裝潢材料、玻璃儀器、燈具、化工產(chǎn)品（不含危險化學(xué)品、易制毒化學(xué)品、監(jiān)控化學(xué)品）的批發(fā)、零售的發(fā)展和創(chuàng)新，打造高指標產(chǎn)品和服務(wù)。自公司成立以來，一直秉承“以質(zhì)量求生存，以信譽求發(fā)展”的經(jīng)營理念，始終堅持以客戶的需求和滿意為重點，為客戶提供良好的誠禹惠閥門，球閥批發(fā)，閥門批發(fā)，蝶閥批發(fā)，從而使公司不斷發(fā)展壯大。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1799329.html</p></div></div></div></div></div><div id="2tvhevx" class="page-right twoColRt"><div id="ractart" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="jyf23p3" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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